322 STAPHYLINID A. 
The antenne are only of moderate length, the tenth joint being scarcely broader 
than long ; the basal and the three or four terminal joints are evidently paler than the 
others. The head is nearly black, rather broad for this genus. The thorax is nearly 
twice as broad as long. The length of the elytra at the sides is a little greater than 
that of the thorax. In the male there is a very slight emargination of the hind 
margin of the last ventral segment, and the terminal styles are larger than in the 
female; there is no armature of the front femora. In the female the median lobe 
between the terminal styles is barbed on each side at the apex. | 
The unique individual from the Rio Naranjo seems to agree perfectly with the small 
series found on Pearl Island. 
8. Tanygnathus vilis. (Tab. VII. fig. 22.) 
Angustulus, fusco-ferrugineus ; antennis fuscis, basi apiceque sordide testaceis ; prothorace rufo, elytris fuscis, 
sutura apiceque rufescentibus ; abdomine pedibusque rufis, illo segmentis singulis ad basin fuscescentibus ; 
elytris prothoracis longitudine, tantum subtilissime punctatis et pubescentibus. 
Long. 4-5 millim. 
Hab. GuateMaua, Guatemala city, San Gerdnimo, Rio Naranjo 450 feet, Coatepeque 
1300 feet (Champion) ; Nicaracua, Chontales (Janson); Panama, San Miguel one of 
the Pearl Islands (Champion). 
Var.? Abdomine fusco. 
Hab. Mexico, Jalapa (Hége). 
This insect is rather smaller and more slender than 7’. terminalis, and has shorter 
more finely punctate elytra, and its antenne are very slightly shorter; the palpi are 
yellow. The thorax is of a rather obscure red colour, and is about one fourth broader 
than long. The elytra are not quite so dull as usual, owing to their delicate punc- 
tuation and excessively fine pubescence. The hind body is quite finely punctate, and 
its setee are comparatively inconspicuous. 
In the male the last ventral plate is more slender than in the female, its extremity 
less truncate ; in the female the middle lobe between the terminal styles is bifid, and 
is regularly barbed with sete on each side, while in the male this central portion is a 
slender, corneous, unarmed process; this latter sex has an elongate file-like process of 
densely placed, short, black cilize on the anterior face of the front femora. 
The unique specimen from Mexico may be either this or some distinct closely allied 
species ; it is too much damaged to decide positively. The individuals from the other 
localities show a good deal of variation in the smaller details of colour and punctuation, 
and I have treated the examples from San Gerénimo as the type form of the species: 
one of these latter is figured. 
4. Tanygnathus crassulus. 
Minus elongatus, pallide piceus fere testaceus ; elytris vix fuscescentibus, antennis, palpis pedibusque pallidis, 
