570 
PRO?. C. H. O DONOGHUE : REPOET ON 
Parasite. 
Host. 
Localit}' and 
Reference. 
Splanchnotrophus brevipes. 
Galvina viridula. 
North Sea (21, p. 568). 
Splanclmotrophus sp. 
Coryphella rufibranchialis. 
Norway (21, p. 568). 
Ismalia monstrosa. 
Phidiana lynceus. 
W. Coast, S. America (9). 
>j . „ 
„ inca. 
W. Coast, S. America (26). 
V J> 
Archidoris incertii. 
W. Coast, S. America (26). 
Ismalia sp. 
Lomanotus gend. 
Mediterranean (21, p. 558) 
Briarella tnicrocepliala. 
Coratosotna irilobatu. 
Red Sea (13, p. 409). 
Briarella sp. probably. 
Glossodoris elisabethina. 
Philippines (16, p. 472). 
B. microoephala. 
Asteronotus bertrana. 
Philippines (19, p. 641). 
The total number of species is very small, only four named for certain and 
a possibility of seven at the most, and, from the inf requency \Yith which they 
have been recorded, it would appear that they are rare. Indeed, in many 
hundreds of specimens I have handled from British Columbia, I have not 
yet encountered one. In spite of this, however, it will be seen from the 
above list that they are widely distributed over the world. The following- 
form is of interest, not onlj^ on its own account, as a new species of a rare 
group, but also because it shows that the group also extends to the Australian 
seas. 
Family OHONDEACANTHID^. 
Genus Splanchnotrophus Hanc. & Norm. Trans. Linn. Soc. Lond. 
xxiv. 1864, p. 51. 
Type here designated : S. gracilis Hanc. & Norm. I. c. p. 51. 
Coast of England. 
Female. Head and thorax either blended into a single segment, the 
thoracic portion of which is furnished on each side with un articulated arm-like 
appendages or lobes, or the first part only of the thorax is united with the 
head and the last part forms a second, but comparatively minute, segment. 
In this case, however, all the thoracic appendages are attached to the first 
segment. First antennae minute and few-jointed ; second larger, in the 
form of prehensile hooks. Labrum large, overhanging the mandibles, which 
organs, together with the maxilljB and two pairs of foot-jaws, are minute and 
crowded round the mouth. Thoracic feet two pairs, minute, simple or two- 
branched, terminating in books. Abdomen two-jointed, the last joint ending 
in two caudal appendages, which are furnished with one or two simple setse. 
Ovigerous sacs elliptical. 
Male minute. Ceplialothorax with lateral appendages and divided into 
four segments, the first of wiiich bears two pairs of thoracic feet. 
