238 Transactions. — Zoology. 



segments short and compressed. Length about -|in. The epi- 

 dermis is very hard and solid, and resists the action of potash 

 even after prolonged boiling. The antennae are almost com- 

 pletely atrophied, and are exceedingly difficult to detect, being 

 placed close to the anterior margin, where the skin is darkest 

 and hardest, so that it is only by very careful search that they 

 can be seen at all ; they are roundly conical, composed of 

 apparently three or four joints much confused ; there are a 

 few terminal hairs. Feet entirely absent. Anal tubercles 

 absent ; the anogenital ring is difficult to examine owing to 

 the hardness of the epidermis ; it is simple and hairless. The 

 abdominal extremity is truncate. Epidermis bearing great 

 numbers of minute fine hairs dorsally, and on the ventral 

 surface on each segment at each side is a group of small 

 elliptical orifices placed close together. 



Female of the second stage brown, slightly convex and 

 elongated ; length about xV n - '■> the cephalic region large and 

 the abdominal segments small, as in the adult ; posterior 

 extremity truncate. Antennae close to the cephalic margin, 

 small, conical, atrophied as in the adult, with three or four 

 confused joints. Feet absent. The anogenital ring seems to 

 have six slender hairs. Epidermis bearing great numbers of 

 circular spinneret-orifices. Margin having a few slender spines, 

 which are more numerous on the abdominal segments. 



Larva red, with white cottony meal; elongated, flatfish ; 

 length about ^V 11 - '-^ ne form is narrow and looks dispropor- 

 tionately long. Antennae rather long, with six joints, of which 

 the sixth is much the longest and largest, the third, fourth, 

 and fifth the shortest and subequal. Feet moderately long ; 

 the tibia and tarsus are about equal ; the digitules are fine 

 hairs. xAbdominal extremity slightly truncate ; anal tubercles 

 very small or absent ; terminal setae normal ; anal ring with 

 six hairs. Margin with a few cephalic slender spines and one 

 on each side of each abdominal segment. Mentum dimerous, 



Male unknown. 



Hab. In Sandwich Islands, ou bamboo. Specimens sent 

 from Honolulu by Mr. Koebele. 



This is a very peculiar and striking insect, which I cannot 

 place elsewhere than in this genus. It is one of the most 

 difficult with which I have had to deal, as regards the various 

 organs, on account of the excessive hardness of the epidermis. 

 Yet I believe that the account here given of it is sufficiently 

 correct. 



Sphaerococcus inflatipes, sp. nov. Plate XVII., figs. 1-5. 



Adult female covered by a waxy test, which is open be- 

 neath, convex above ; the dorsal region of the test is elevated 

 in a more or less conical manner, sometimes smoothly 



