SOME NEW EXOTIC PHOR1DÆ. 
411 
the occiput to the anterior edge of the front than high. Eyes very 
small, oval, their longest diameter only about one-half the diameter of 
the third antennal joint. Antennæ small, rounded, the finely pubescent 
arista reaching just beyond the tip of the thorax. Palpi large, swollen, 
projecting one-half the length of the head-height, bristly below. Pro¬ 
boscis very short, fleshy. The front is rather thickly hairy, but there 
seem to be no bristles except a row of three weak ones on the cheek, 
just below the eyes. Ocelli absent. The thorax is likewise without 
macrochætæ, about four times as vide as long. Abdomen with six dorsal 
sclerites, the first longer than the second; third, fourth and fifth sub¬ 
equal to the second but gradually lengthening ; sixth one-half longer, 
the first to the fifth have a line of transparent dots along the posterior 
margin indicating the insertion of rows of small macrochætæ. Fifth 
segment without a gland opening. On the venter there is a single chi- 
tinized plate near the apex. External genitalia small. Wings and hal¬ 
teres entirely wanting. Legs stout, the hind tibiæ each with a single 
very small spur. Hind metatarsus seriately setulose as usual. 
One female from Kibosho, German East Africa, March 1903 
(Katona). 
This is the second species of Chonocephalus to be discovered in 
the female sex. Of the two other known species C. dorsalis Wand, from 
the East Indies previously mentioned is known in both sexes, while 
C. similis Brues from India is known only in the male sex. The disco¬ 
very of a third species in Africa so very similar to the East Indian 
form is certainly unexpected and widely extends the range of this most 
remarkable wingless genus. The striking similarity to C. dorsalis con¬ 
sists in the presence of the six heavily cbitinized contiguous dorsal 
plates and one ventral one, the bare front and the general habitus of 
the body. The absence of anterior frontal bristles in the African species 
may be accidental as bristles are easily broken from alcoholic specimens. 
Just how great the variation may be among species of these ex¬ 
tremely degenerate wingless females and what may constitute valid 
specific characters I hardly feel competent to say in view of our limi¬ 
ted knowledge of this group, but I think there can be no doubt of the 
propriety in recognizing the African and East Indian females as diffe¬ 
rent in absence of the male of the new species. In kiboshoënsis the 
head is wider than the thorax when seen from above and the com¬ 
parative lengths of the dorsal abdominal scelerites are different from 
in dorsalis. 
