158 The Scottish Naturalist. 



Internal Appearances. — The liver weighed 5^ oz., and 

 had externally a few circular indentations caused by Ascaris 

 capsular ia, Rud. The gall-bladder was empty. The heart 

 weighed fully 1^ oz., and the auricle was distended with blood. 

 The oesophagus contained several examples of Distoma varicum y 

 Rud., amongst the mucus. The usual tough, whitish, and 

 translucent mucus occurred in the stomach, entangling many of 

 the Distoma, and showing, microscopically, many cells and 

 granules. A whitish elevation of the mucous surface indicated 

 the position of a specimen of Tetrarhynchus appendiculatus, Rud., 

 and another slightly elevated point held an example of Ascaris 

 capsular ia. The contents of the duodenum were of a dark 

 reddish colour, evidently from admixture of blood, as the micro- 

 scope showed. This, therefore, differed from the ordinary 

 condition in kelts, and was probably due to injury. The semi- 

 solid and usually orange masses in the centre of the gut were 

 also deep reddish, and their calcareous crystalline constituents 

 chiefly of a radiate type, though fusiform and laminar 

 forms also occurred. The same masses were found in the pan- 

 creatic cceca. Between the duodenum and the valvular portion 

 of the intestine the contents consisted mainly of mucus, but at 

 the latter the crystalline masses again appeared. The pancreatic 

 cceca were almost deprived of the fatty investment generally 

 so conspicuous in the well-nourished fish. The milts weighed to- 

 gether 2^ oz., and internally consisted of a milky semi-fluid 

 granular substance. The swim-bladder was distended, and 

 measured 1 foot 4^ inches long. 



MEMOIRS ON SCOTTISH TENTHREDINIDjE. 



By P. CAMERON, Jun. 



No. Ill -HEMICHEOA LUBIDIVENTRIS. 



Tenthredo luridiventris Fallen; Act. Holm. 1808, 



P- n5> 55- 

 Leptocercus luridiventris Thomson; Hy. Sc. I. 78. No. 4. 



Nematus (Leptopus) hypogastricus Hartig; die Blatt., 184. 



1, Tab. v. fig. 41 (after De Geer). 



Camponiscus Heal^ei Newman; Ent. No. 62. 215. 1869. 



