Haswett—A Monograph of the Temnocephalee. 141 
11. TremMNOCEPHALA BREVICORNIS. 
Temnocephala brevicornis, Monticelli, l.c. p. 1, foot-note; and “ Di una nuova 
specie del genere Temnocephala, Blanch., ectoparassita dei Cheloniani.” 
This species is doubtless distinct from the others enumerated above, but is not 
sufficiently characterised by Monticelli; the points he mentions, length of tentacles, 
form of body and the like, being such as vary extremely according to the condition of 
the specimen. Monticelli regards 7. dvevicornzs as approaching nearer to 7. mznor, 
mihi, than to any of the others, ‘ma se ne discosta perché questa ha il corpo pit 
slanciato ed i tentacoli esili (secondo Haswell)”; but these differences are merely due 
to the contracted state of Monticelli’s specimens, and the internal organs will have to 
be examined before this species can be said to be known as distinct from the others. 
The specimens were found in 1856 by Reinhard in Brazil on the shell of the fresh- 
water Chelonians Hydromedusa maximiliant and [ydropsis radiolata.* 
12. TEMNOCEPHALA MADAGASCARIENSIS. 
Temnocephala madagascariensis, Vayssiére, “Etude sur le Tenenocephala parasite 
de P Astacoides madagascariensis,” ‘Annales de la Faculté des Sciences de Marseille.’ 
Tome IT., Fascicule v. (1892); ‘Comptes Rendus,’ Tome CXV. p. 64 (1892). 
In this species there are no fewer than twelve cephalic tentacles. The sucker is 
very small. There is a large pharynx ; the intestine does not appear to be distinctly 
constricted. There is a pair of eyes. The openings of the excretory sacs are situated 
on the lateral margins. 
Vayssiére’s interpretation of the genital organs does not appear to me to be 
‘satisfactory. Should his statement be confirmed it would be necessary to regard the 
Madagascar species as generically distinet from Temnocephala. The eggs are 
supported on short stalks. 
This species occurs on the surface of the Madagascar fresh-water crayfish 
( Astacotdes madagascartensts ). 
Genus CRASPEDELLA (new). 
A series of (five) papillose cephalic tentacles. On the dorsal surface a series of 
delicate transverse lamella divided into lobes tipped with papillae. The pharynx 
rudimentary. 
_ * While the above has been passing through the press I have received, through the kindness of Dr. Brandes, 
specimens of the species in question, and find that it is quite distinct from the others. The cirrus is relatively longer and 
narrower than in 7, Jheringii, and is curved, slightly in the proximal three-fourths, strongly at the distal end, with a 
relatively small introvert provided with a few delicate spines. Eyes are not visible, but this may be due to the solution 
of the pigment. 
