2S PROCEEDINGS OF THE NATIONAL MUSEUM. tol. 60. 



ment described by Maskell not lo rated, very short and stout triangu- 

 lar; spiracles not a* companied by any circular multilocular pores; 

 anal lobes entirely lacking, their presenice indicated only by two 

 pairs of short spines, each pair accompanied by a slender seta, and 

 each set diagonally behind the anal ring; anal ring simple, but ap- 

 parently bearing two setae, placed close together just outside of the 

 ring proper, and morphologically the lower pair; posterior apex of 

 body more heavily chitinized, forming a somewhat circular disk, 

 bearing numerous long setae, and, in the center, the anal ring, the 

 setae arranged in two roughly circular irregular bands at the outside, 

 in three transverse rows anterior to the anal ring, and in an irregular 

 circular cluster around the ring; the anterior body segments with 

 similar setae along the margins, these in transverse rows on each 

 side in the abdominal segments, but irregularly scattered along the 

 margins of the thoracic, and head segments, gradually averaging 

 smaller anteriority ; derm, so far as noted, with only a single type of 

 pore, this multilocular disk with 5-7 loculi, set at the bottom of 

 a short tube, fairly numerous, but scattered, over the whole anterior 

 portion of the body, less numerous on the chitinized apical disk, want- 

 ing in the immediate vicinity of the anal ring, present both dorsally 

 and ventrally. 



Intermediate stage female. — Not known. 



Larva. — (The Maskell slides of this stage show the larva of C. 

 spiniferus, not of casuarinae, but this fact modifies the description 

 given by him only in regard to the body spines.) Oval, somewhat 

 narrov/ed behind, antennae 5-segmented, not with six; legs normal; 

 mentum apparently 1-segmented; body, at least in the abdominal 

 region, with five rows of large spines on each side, two dorsal, one 

 marginal, and two ventral, the spines in the latter smaller, all stout 

 and long, but pointed at apex ; the spines in spiniferus considerably 

 longer than in true casuarinae, flattened and incised at apices, not 

 pointed; anal lobes well developed, each with a stout apical spine 

 and a long apical seta, also bearing two smaller spines; anal ring 

 apparently simple, with a chitinized flange above, beneath this two 

 widely separated short spines, and at the bottom two more short 

 spines set close to each other ; spines of head reduced to small, rela- 

 tively slender setae. 



Three species besides the type have been placed in this genus. The 

 writers have no information at present in regard to C. gracilis Fuller. 

 As noted by Maskell when describing it, O. om/plior Maskell is very 

 difficult to separate from C . casuarinae. C. spinife^^ts Maskell shows 

 some conspicuous differences from the type and is possibly not con- 

 generic with it. In the adult of this species the body, legs, antennae, 

 spiracles, and derm pores appear to be of the same general character 



