58 DIPTERA 
where it is just as well not to read the codes too literally, but to utilize Zetterstedt's second species as 
the genotype and thus preserve a well-known and time-honored name for this series of species. An 
iron-clad rule that permits any reviewer to fix for perpetuity the types of genera without first-hand 
knowledge of the species concerned should meet with protest. It were better to modify the rule so 
as to exclude from consideration species belonging to recognized genera. Zetterstedt's third species, 
fallida, is dichoptic and therefore is not congeneric with either of the others, a fact noted by Zetterstedt. 
The next following genus, Allauthalia, is erected for its reception. 
The genera Aníhalia, Euthyneura, Trichina, Microphorus and Anmthepiscopus have been much 
confused due to a general resemblance between them. The first three have the anal cell of similar 
construction, with the anal crossvein bent sharply back and meeting the anal vein in a distinct but 
obtuse angle, the characteristic neuration of the Ocydromiine. n this subfamily they form a natural 
group distinct in having three posterior veins, a short, two-jointed antennal style with the first joint 
thick and the second joint microscopic, and are evidently related to GEdalea, — Those species with short 
antenne belong to Amthalia, those with lengthened antennz and short proboscis to Trichina and those 
with lengthened antennz and projecting proboscis to Eufhyneura. As longas it was considered that the 
genera were defined by single characters there was justification in regarding them synonymous, and 
as these characters are all quite variable the genera have been merged by various writers. However, 
as indicated in the key to the genera, the species of each of these groups have a distinctive facies, 
and undoubtedly the groups as outlined present phyletic lines of descent which may be considered to 
have generic rank. The commonest American species differ from the typical forms in having a highly 
arched thorax, a more or less protruding proboscis and a lengthened antennal style, and bear a super- 
ficial resemblance to An/hefiscopus, with species of which genus they associate at the same flowers. 
TABLE OF THE NORTH AMERICAN SPECIES OF ANTHALIA 
r. Yellow species with yellow legs and halteres; proboscis veryshort . . . . . . . . . . 2. 
Black species, the halteres and legs usually blackish; bristles black, 
pale only in femorata . . . P NEP LC I 
2. Bristles of the body yellow ; head "e SUR of the antennce SECUN 
third antennal joint elongate oval; sections of the fifth vein 1 : 1.9. A. GiLvrurRTA, Coquillett. 
Bristles of the body black; head and antennz black; sections of the 
fifth vein subequal; third antennal joint rotund (bulboesa Q). . . . . . . «. . . .. X 
3. Head entirely black, thorax medially darker, veins brownish . . . var. PuLBosa, Melander. 
Front and cheeks, entire body and veins yellow. . . . . var. FLAVA, Coquillett. 
. Upper facets of 3f eyes scarcely larger than the lower; style vends as 
long as the third antennal joint; proboscis projecting as far as the 
length of the head, palpi very narrow; stigma distinct; scutellum 
withfourbritles ... . . -« . . .« «e «7. 12 7 20 ACMANDALOTA BOV ORBE: 
hn 
(1) Anthalia mandalota, nov. sp. — Male. Length 2 mm. Entirely black including the antenne, mouth- 
parts, legs and halteres. Head rather hemispherical, eyes contiguous almost to the antennze, narrowly separated on the 
face and almost touching below, facets uniformly small; antennze short, the first joint minute, the third joint broadly 
pyriform, one-half longer than deep, the style slender and two-thirds the length of the third joint; proboscis geniculate at 
the base, slender and projecting forward a distance somewhat greater than the length of the head, the palpi narrow, almost 
linear and furnished with four small setz ; ocellar and vertical bristles short. Thorax greatly arched, nearly shining, 
hairs inconspicuous, four notopleurals, one posthumeral, four scutellars; pleure lightly pollinose, a sternopleural spot 
shining : pygidium minute, abdominal hairs sparse. Front tibiz slightly swollen, short-ciliate along the extensor edge, 
extensor cilia of the hind femora as long as the diameter of the femur, of the under side bristle-like, Calypteres dusky. 
