198 



PSYCHE. 



[Apiil 1SS9. 



tered group of seven taste-cups on each 

 side of the base of the median furrow, 

 nearly all bearing a bristle, but some 

 not ; all are so isolated from the other 

 true hairs that they are most probably 

 gustatory. On each side of the region 

 corresponding to the front edge of the 

 clypeus is a group of about 30 taste- 

 cups, only one or two of the outer ones 

 of which seem to bear a bristle. 



Cyrtophylhis coticavi/s Scudd. — End 

 of the labrum notched and the sinus 

 filled in with stifl" blunt bristles, this 

 area extended back on the epipharynx ; 

 there are distinct traces of a median 

 suture. Along the middle of the epi- 

 pharynx the spines are absent. The 

 taste-cups are arranged much as in 

 XiphidiiDii^ but they are more numer- 

 ous, as might be expected, this genus 

 being in general the more specialized. 

 There are from 50 to 60 taste-cups in 

 the front region ; l>ehind the middle a 

 group of 25 on each side, and over an 

 area corresponding to the base of the 

 labrum and front edge of the clypeus is 

 a sensory field vs'ith about 70 taste-cups 

 on each side. They are true cups or 

 beaker-like papillae, some with a fine, 

 others with a short, stout, conical seta. 

 The kat3xlid is thus provided with about 

 170 to iSo taste-cups on its epipharynx. 

 Avabrtis simplex Hald. — Front edge 

 of the labrum full, though there are 

 traces of a median suture. The surface 

 of the epipharynx is covered with stout 

 setae. Along the median furrow of the 

 epipharynx which is bordered with a 

 delicate pile, are scattered, especially 

 near the base, a few peculiar taste-cups, 



each bearing a very short conical seta, 

 which is larger and shorter than usual 

 the furrow not being pilose. At a point 

 situated near the anterior edge of the 

 clypeus the heavy spines towards the 

 middle graduate into what appear to be 

 sense-cups. 



CeuthopJiilus niaciilatus (Harris). — 

 Labrum slightly excavated. Surface of 

 the epipharynx finely pilose. Front 

 edge at the middle forming a highl}' 

 specialized pilose area, excavated on the 

 edge, the sinus being broad and shallow 

 and the edge lined with a hedge-like 

 row of close-set gustatory rods. A well 

 marked median furrow, free from hairs 

 or bristles, and in front is a group, 30 

 on each side of the median line, of 

 raised papillae — like taste-cups, a little 

 shorter and broader than those oi Haden- 

 oeciis. At the base of the labral region 

 on each side of the median line is a sen- 

 sory field of 25 taste-cups arranged in 

 quite regular rows. On the anterior 

 clypeal region is a group of 9 or 10 

 scattered taste-cups which are shorter, 

 more like cups and far less numerous 

 than in Hadeiiocciis. 



Hadcnoecns siibtcr7-auciis Scudd. — 

 In specimens from White's Cave near 

 Mammoth Cave, Ky., the front edge of 

 the labrum is peculiar from the ver}' 

 deep, narrow median pouch-like sinus, 

 which enlarges towards the bottom, and 

 opens out on a median projection, 

 which, as well as the sinus, is fringed 

 with coarse fepines, which at the mouth 

 of the sinus become curved. The taste- 

 cups are highl}' developed in this cave- 

 cricket, being rounded paj^Illae with tlie 



